Suppose an airplane is flying 11,000 feet above the ground. Another airplane is directly above at 37,000 feet above the ground. How far apart are the airplanes?

What situation is an example of an observational study

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.